| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.car.settings.storage; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.app.usage.StorageStatsManager; |
| import android.car.userlib.CarUserManagerHelper; |
| import android.content.Context; |
| import android.os.Bundle; |
| import android.os.storage.StorageManager; |
| import android.os.storage.VolumeInfo; |
| import android.util.SparseArray; |
| |
| import androidx.loader.app.LoaderManager; |
| import androidx.loader.content.Loader; |
| |
| import com.android.settingslib.applications.StorageStatsSource; |
| import com.android.settingslib.deviceinfo.PrivateStorageInfo; |
| import com.android.settingslib.deviceinfo.StorageManagerVolumeProvider; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Class to manage all the callbacks needed to calculate the total volume, storage used by each app |
| * category and notifying the listeners when the data is loaded. |
| */ |
| public class StorageSettingsManager { |
| |
| /** |
| * Callback that is called once the volume of data is loaded for the mounted device. |
| */ |
| public interface VolumeListener { |
| /** |
| * Called when the data is successfully loaded from {@link VolumeSizeCallback} and the |
| * total and used size for the mounted device is calculated from {@link AppsStorageResult} |
| */ |
| void onDataLoaded(SparseArray<StorageAsyncLoader.AppsStorageResult> result, |
| long usedSizeBytes, long totalSizeBytes); |
| } |
| |
| private static final int STORAGE_JOB_ID = 0; |
| private static final int VOLUME_SIZE_JOB_ID = 1; |
| |
| private final Context mContext; |
| private final VolumeInfo mVolumeInfo; |
| |
| private List<VolumeListener> mVolumeListeners = new ArrayList<>(); |
| private PrivateStorageInfo mPrivateStorageInfo; |
| private SparseArray<StorageAsyncLoader.AppsStorageResult> mAppsStorageResultSparseArray; |
| |
| StorageSettingsManager(Context context, VolumeInfo volume) { |
| mContext = context; |
| mVolumeInfo = volume; |
| } |
| |
| /** |
| * Registers a listener that will be notified once the data is loaded. |
| */ |
| public void registerListener(VolumeListener volumeListener) { |
| if (!mVolumeListeners.contains(volumeListener)) { |
| mVolumeListeners.add(volumeListener); |
| } |
| } |
| |
| /** |
| * Unregisters the listener. |
| */ |
| public void unregisterlistener(VolumeListener volumeListener) { |
| mVolumeListeners.remove(volumeListener); |
| } |
| |
| /** |
| * Start calculating the storage and volume. |
| */ |
| public void startLoading(LoaderManager loaderManager) { |
| loaderManager.restartLoader(STORAGE_JOB_ID, Bundle.EMPTY, new AppsStorageResult()); |
| loaderManager.restartLoader(VOLUME_SIZE_JOB_ID, Bundle.EMPTY, new VolumeSizeCallback()); |
| } |
| |
| private void onReceivedSizes() { |
| if (mAppsStorageResultSparseArray != null && mPrivateStorageInfo != null) { |
| long privateUsedBytes = mPrivateStorageInfo.totalBytes - mPrivateStorageInfo.freeBytes; |
| for (VolumeListener listener : mVolumeListeners) { |
| listener.onDataLoaded(mAppsStorageResultSparseArray, privateUsedBytes, |
| mPrivateStorageInfo.totalBytes); |
| } |
| } |
| } |
| |
| /** |
| * Callback to get the storage volume information for the device that is mounted. |
| */ |
| private class VolumeSizeCallback |
| implements LoaderManager.LoaderCallbacks<PrivateStorageInfo> { |
| |
| @Override |
| public Loader<PrivateStorageInfo> onCreateLoader(int id, Bundle args) { |
| StorageManager sm = mContext.getSystemService(StorageManager.class); |
| StorageManagerVolumeProvider smvp = new StorageManagerVolumeProvider(sm); |
| StorageStatsManager stats = mContext.getSystemService(StorageStatsManager.class); |
| return new VolumeSizesLoader(mContext, smvp, stats, mVolumeInfo); |
| } |
| |
| @Override |
| public void onLoadFinished( |
| Loader<PrivateStorageInfo> loader, PrivateStorageInfo privateStorageInfo) { |
| if (privateStorageInfo == null) { |
| return; |
| } |
| mPrivateStorageInfo = privateStorageInfo; |
| onReceivedSizes(); |
| } |
| |
| @Override |
| public void onLoaderReset(Loader<PrivateStorageInfo> loader) { |
| } |
| } |
| |
| /** |
| * Callback to calculate how much space each category of applications is using. |
| */ |
| private class AppsStorageResult implements |
| LoaderManager.LoaderCallbacks<SparseArray<StorageAsyncLoader.AppsStorageResult>> { |
| |
| @NonNull |
| @Override |
| public Loader<SparseArray<StorageAsyncLoader.AppsStorageResult>> onCreateLoader(int id, |
| @Nullable Bundle args) { |
| return new StorageAsyncLoader(mContext, new CarUserManagerHelper(mContext), |
| new StorageStatsSource(mContext)); |
| } |
| |
| @Override |
| public void onLoadFinished( |
| @NonNull Loader<SparseArray<StorageAsyncLoader.AppsStorageResult>> loader, |
| SparseArray<StorageAsyncLoader.AppsStorageResult> data) { |
| mAppsStorageResultSparseArray = data; |
| onReceivedSizes(); |
| } |
| |
| @Override |
| public void onLoaderReset( |
| @NonNull Loader<SparseArray<StorageAsyncLoader.AppsStorageResult>> loader) { |
| } |
| } |
| } |